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Railroads, Line-Haul Operating, Rollinsville, Colorado. NPDES permit CO0048986 expired Sep 30, 2021; its limits still apply. Last 12 months: no values over a limit, 8 required values missing, 10 of 66 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, weak acid, dissociable | rolling average | report only (ug/L) | all year | 001 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Iron, total recoverable | 30-day average | ≤ 9500 ug/L | all year | 001 |
| Iron, dissolved [as Fe] | 30-day average | report only (ug/L) | all year | 001 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 6500 ug/L | all year | 001 |
| Aluminum, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, total recoverable | rolling average | report only (ug/L) | all year | 001 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | 30-day average | ≤ .16 ug/L | all year | 001 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | rolling average | report only (ug/L) | all year | 001 |
| Silver, potentially dissolved | rolling average | ≤ .024 ug/L | all year | 001 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 001 |
| Copper, potentially dissolved | rolling average | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | 30-day average | ≤ 14 ug/L | all year | 001 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 001 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 001 |
| Uranium, total | 30-day average | report only (ug/L) | all year | 001 |
| Uranium, total | 30-day average | ≤ 533 ug/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .128 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ .35 ug/L | all year | 001 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 001 |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | minimum value | ≥ 100 % | all year | 001 |
| LC50 Static Renewal 96Hr Acute Pimephales promelas | minimum value | ≥ 100 % | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 002 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Iron, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Aluminum, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Aluminum, total recoverable | rolling average | report only (ug/L) | all year | 002 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 002 |
| Silver, potentially dissolved | 30-day average | report only (ug/L) | all year | 002 |
| Silver, potentially dissolved | 30-day average | ≤ .34 ug/L | all year | 002 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 002 |
| Silver, potentially dissolved | rolling average | report only (ug/L) | all year | 002 |
| Silver, potentially dissolved | rolling average | ≤ .051 ug/L | all year | 002 |
| Lead, potentially dissolvd | 30-day average | report only (ug/L) | all year | 002 |
| Lead, potentially dissolvd | 30-day average | ≤ 30 ug/L | all year | 002 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 002 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 002 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 002 |
| Uranium, total | 30-day average | report only (ug/L) | all year | 002 |
| Uranium, total | 30-day average | ≤ 580 ug/L | all year | 002 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .06 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total [as Hg] | 30-day average | report only (ug/L) | all year | 002 |
| Mercury, total [as Hg] | 30-day average | ≤ .73 ug/L | all year | 002 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 002 |
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 003 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | maximum 7-day average | report only (mg/L) | all year | 003 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 003 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 003 |
| Cyanide, weak acid, dissociable | rolling average | report only (ug/L) | all year | 003 |
| Arsenic, total recoverable | 30-day average | report only (ug/L) | all year | 003 |
| Iron, total recoverable | 30-day average | ≤ 9500 ug/L | all year | 003 |
| Iron, dissolved [as Fe] | 30-day average | ≤ 6500 ug/L | all year | 003 |
| Aluminum, total recoverable | 30-day average | report only (ug/L) | all year | 003 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Aluminum, total recoverable | rolling average | report only (ug/L) | all year | 003 |
| Molybdenum, total recoverable | 30-day average | report only (ug/L) | all year | 003 |
| Zinc, potentially dissolved | 30-day average | report only (ug/L) | all year | 003 |
| Zinc, potentially dissolved | daily maximum | report only (ug/L) | all year | 003 |
| Silver, potentially dissolved | 30-day average | ≤ .16 ug/L | all year | 003 |
| Silver, potentially dissolved | daily maximum | report only (ug/L) | all year | 003 |
| Silver, potentially dissolved | rolling average | ≤ .024 ug/L | all year | 003 |
| Copper, potentially dissolved | 30-day average | report only (ug/L) | all year | 003 |
| Copper, potentially dissolved | daily maximum | report only (ug/L) | all year | 003 |
| Copper, potentially dissolved | rolling average | report only (ug/L) | all year | 003 |
| Lead, potentially dissolvd | 30-day average | ≤ 14 ug/L | all year | 003 |
| Lead, potentially dissolvd | daily maximum | report only (ug/L) | all year | 003 |
| Oil and grease | instantaneous maximum | ≤ 10 mg/L | all year | 003 |
| Uranium, total | 30-day average | ≤ 533 ug/L | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .128 MGD | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Mercury, total [as Hg] | 30-day average | ≤ .35 ug/L | all year | 003 |
| Oil and grease visual | instantaneous maximum | report only (abst=0;prst=1) | all year | 003 |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | minimum value | ≥ 100 % | all year | 003 |
| LC50 Static Renewal 96Hr Acute Pimephales promelas | minimum value | ≥ 100 % | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | ≤ .128 MGD | all year | 004 |
| Temperature, water deg. centigrade | maximum weekly average | report only (deg C) | all year | UST1 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | UST1 |
Cited limits by parameter: Colorado's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/CO0048986 · MCP: https://passage-data.com/mcp